Title
Power factor correction of MV microgrids by adjusting LV photovoltaic inverters
Date Issued
15 September 2021
Access level
metadata only access
Resource Type
conference paper
Author(s)
Center Federal University of ABC (UFABC)
Publisher(s)
Institute of Electrical and Electronics Engineers Inc.
Abstract
In recent years, utilities require microgrids connected to the medium voltage distribution network to correct power factor at the point of common coupling (PCC). This paper proposes an approach based on the golden search method and the Fibonacci search method to define the photovoltaic inverters' power factor at the low voltage side of the network to achieve adequate power factor at the microgrid PCC (medium voltage). The performance of the proposed approach is evaluated using a simulation benchmark implemented using the OpenDSS COM interface in Matlab. This simulation is based on a real microgrid located at the Federal University of ABC in Santo André, Brazil, that includes nine photovoltaic systems with a total capacity of 473 kVA. The results showed that utilizing the proposed approach in microgrids can avoid operating with low power factors.
Language
English
OCDE Knowledge area
Ingeniería eléctrica, Ingeniería electrónica
Subjects
Scopus EID
2-s2.0-85117604025
ISBN
9781665444217
Source
2021 IEEE PES Innovative Smart Grid Technologies Conference - Latin America, ISGT Latin America 2021
Sponsor(s)
This paper presented an approach to correct the MV mi-crogrid’s power factor at the PCC by adjusting the PV inverters’ power factor connected to the LV side of the network. This approach presented two alternatives. The first alternative uses the golden section search method, whereas the second alternative uses the Fibonacci search method. The golden search method and the Fibonacci search method succeed in determining suitable setpoints of PV inverters’ power factor, improving and preserving the microgrid power factor between an adequate interval along the period of analysis. Differently from works in the literature, there was no need for considering additional equipment for reactive power compensation as capacitor banks. It is important to note that the final set of settings of both search methods are similar. A small difference can be found in the adjustment of the inverter corresponding to PV system number 5. This small difference is less than 0.005 and doesn’t affect the final objective function value. In future work, we analyze the impact of power factor adjustment in improving the quality of the voltage distribution network for different periods of operation. ACKNOWLEDGMENT The authors would like to thank Enel Distribuição São Paulo, which funded the research and development project entitled “Potencialidade da Geração Solar Fotovoltaica para Melhoria no Fornecimento de Energia Elétrica nas Redes de Distribuição – Chamada ANEEL de Projeto Prioritário e Es-tratégico N°001/2016, código ANEEL 00390-1083-2020".
Sources of information:
Directorio de Producción Científica
Scopus